Logic Pro 10.7.2 M1 native - drag'n'drop from browser to AU plugins not working

As the title says. Drag'n'drop from Logic's browser (on the right) works with Logic's own Sampler or Q-Sampler, for example. But not with 3rd party plugins (Backbone, TAL Sampler, Redux, Pigments...) Basically any plugin which accepts samples.

When dragging a sample from a Finder window into the plugin, then it works. It's just the built in browser that seems to be affected.

It works as it should with Logic in Rosetta mode.

Logic 10.7.2

MacOS 12.2.1

Macbook Pro 13" M1

I've looked everywhere here, but can't find a place to file bug reports. Is there such a place?

regards